Innovative solar augmentation of gas turbine combined cycle plants

Popov, Dimityr

doi:10.1016/j.applthermaleng.2013.12.002

Cited by 44 publications

(8 citation statements)

References 11 publications

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“…Bellos et al [16] analyzed and optimized a kind of power plant of solar energy assisted Brayton cycle system; however, the PTCs supply amount of demanded heat for preheating the compressed air before burning in the combustion chamber. Similarly, the solar thermal was proposed to cool the inlet air of gas turbine in some other researches [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Advanced Thermodynamic Analysis Applied to an Integrated Solar Combined Cycle System

Wang

Zhang

et al. 2018

Energies

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The variation performance of integrated solar combined cycle (ISCC) is presented using energy, conventional exergy and advanced exergy analysis methods to provide information about exergy destruction of components and efficiencies of overall plant. Moreover, the theory of dividing the exergy destruction of main components into unavoidable/avoidable and exogenous/endogenous parts allows for further understanding the real potentials for improving. Besides, the exergy destruction rate and exergy efficiency of components as well as overall plant were hourly analyzed within a typical day. Results indicate the exergy destruction rate of overall system drops from 49.79% to 44.65% in summer and decreases from 49.79% to 47.59% in winter. As the solar irradiation intensity rises, the solar field efficiency reaches to 42.16% in winter and 47.5% in summer. The solar-to-electric energy efficiency gets to 13.69% in winter and 15.46% in summer. In addition, with the increase of solar energy input to the ISCC system, the exergy destruction of Brayton cycle components decreases; however, the exergy destruction of Rankine cycle components increases. Furthermore, the exergy destruction of solar field has a large extended from 14.55 MW to 58.03 MW. Moreover, the heat recovery steam generator (HRSG) and the steam turbines have the largest exergy destruction rate of 11.26% and 13.63% at 15:00 p.m.

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Section: Introductionmentioning

confidence: 99%

Advanced Thermodynamic Analysis Applied to an Integrated Solar Combined Cycle System

Wang

Zhang

et al. 2018

Energies

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“…Popov [21] proposed and compared two ISCC layouts with inlet temperature cooling, and analyzed its thermodynamic performance at deign point and its cost advantages. The research results showed that a system with an absorption refrigerator has a lower levelized cost of electricity than the traditional ISCC system.…”

Section: Introductionmentioning

confidence: 99%

Performance Study of a Novel Integrated Solar Combined Cycle System

Duan

Wang

2018

Energies

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Based on a traditional integrated solar combined cycle system, a novel integrated solar combined cycle (ISCC) system is proposed, which preferentially integrates the solar energy driven lithium bromide absorption refrigeration system that is used to cool the gas turbine inlet air in this paper. Both the Aspen Plus and EBSILON softwares are used to build the models of the overall system. Both the thermodynamic performance and economic performance of the new system are compared with those of the traditional ISCC system without the inlet air cooling process. The new system can regulate the proportions of solar energy integrated in the refrigerator and the heat recovery steam generator (HRSG) based on the daily meteorological data, and the benefits of the solar energy integrated with the absorption refrigeration are greater than with the HRSG. The results of both the typical day performance and annual performance of different systems show that the new system has higher daily and annual system thermal efficiencies (52.90% and 57.00%, respectively), higher daily and annual solar photoelectric efficiencies (31.10% and 22.31%, respectively), and higher daily and annual solar photoelectric exergy efficiencies (33.30% and 23.87%, respectively) than the traditional ISCC system. The solar energy levelized cost of electricity of the new ISCC system is 0.181 $/kW·h, which is 0.061 $/kW·h lower than that of the traditional ISCC system.

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“…has a complex influence on initiation of brittle fracture. Significant risk factor for brittle fracture include heterogeneous internal structural stresses which may reach the yield strength [7], and their uneven distribution in the fracture zone [8][9][10][11][12] 10 shows that the crack appeared in the HAZ of 12Cr1MoV steel (Fig. 10 a) and has spread to the area of the weld (Fig.…”

Section: Materials Samples Experimental Techniquesmentioning

confidence: 99%

The microhardness and internal stresses allocation in superheating pipes welded node made of dissimilar steels

et al. 2017

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Abstract. The object of research is the welded knot made of dissimilar steels 12Cr1MoV and Di-59. Research methods are spectral analysis, microhardness measurements and X-ray analysis. It is established that the structural-phase nonuniformity, significant concentration fluctuations of alloying elements, the spread in values of microhardness and mechanical characteristics along the length of the pipe can cause significant value of internal macrostress that leads to the formation of the "flaw" defect type in the welding process. It is shown how to distinguish between flaws that have appeared on the stage of production from operating flaws.

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Innovative solar augmentation of gas turbine combined cycle plants

Cited by 44 publications

References 11 publications

Advanced Thermodynamic Analysis Applied to an Integrated Solar Combined Cycle System

Advanced Thermodynamic Analysis Applied to an Integrated Solar Combined Cycle System

Performance Study of a Novel Integrated Solar Combined Cycle System

The microhardness and internal stresses allocation in superheating pipes welded node made of dissimilar steels

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